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Global Navigation Satellite Systems (GNSS) Rapid Ionosphere Products from NASA CDDIS

Published by CDDIS | National Aeronautics and Space Administration | Catalog Last Checked: August 18, 2026 at 11:37 PM | Dataset Last Updated: August 18, 2026
Ionosphere Total Electron Content (TEC) grids derived from analysis of Global Navigation Satellite System (GNSS) data. These products are the generated by analysis centers in support of the International GNSS Service (IGS) and combined by the IGS ionosphere analysis coordinator to form the official IGS rapid ionosphere product (daily).

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